Hydrodynamics of Pumps

Cover......Page 1
Frontmatter......Page 2
Contents......Page 6
Preface......Page 10
Nomenclature......Page 12
1.2 Cavitation......Page 18
1.3 Unsteady Flows......Page 19
1.4 Trends in Hydraulic Turbomachinery......Page 20
1.5 Book Structure......Page 21
2.1 Geometric Notation......Page 22
2.2 Cascades......Page 25
2.3 Flow Notation......Page 28
2.4 Specific Speed......Page 29
2.5 Pump Geometries......Page 30
2.6 Energy Balance......Page 31
2.7 Noncavitating Pump Performance......Page 35
2.8 Several Specific Impellers and Pumps......Page 36
3.2 Linear Cascade Analyses......Page 39
3.3 Deviation Angle......Page 44
3.4 Viscous Effects in Linear Cascades......Page 45
3.5 Radial Cascade Analyses......Page 47
3.6 Viscous Effects in Radial Flows......Page 51
4.2 Three-Dimensional Flow Effects......Page 54
4.3 Radial Equilibrium Solution: An Example......Page 57
4.4 Discharge Flow Management......Page 61
4.5 Prerotation......Page 64
4.6 Other Secondary Flows......Page 68
5.2 Cavitation Parameters......Page 72
5.3 Cavitation Inception......Page 75
5.4 Scaling of Cavitation Inception......Page 79
5.5 Pump Performance......Page 80
5.6 Types of Impeller Cavitation......Page 82
5.7 Cavitation Inception Data......Page 87
6.2 Cavitation Bubble Dynamics......Page 95
6.3 Cavitation Damage......Page 100
6.4 Mechanism of Cavitation Damage......Page 102
6.5 Cavitation Noise......Page 105
7.2 Typical Pump Performance Data......Page 113
7.3 Inducer Designs......Page 119
7.4 Inducer Performance......Page 121
7.5 Effects of Inducer Geometry......Page 125
7.6 Analyses of Cavitation in Pumps......Page 128
7.7 Thermal Effect on Pump Performance......Page 131
7.8 Free Streamline Methods......Page 139
7.9 Supercavitating Cascades......Page 142
7.10 Partially Cavitating Cascades......Page 144
7.11 Cavitation Performance Correlations......Page 151
8.1 Introduction......Page 154
8.2 Frequencies of Oscillation......Page 157
8.3 Unsteady Flows......Page 160
8.4 Rotating Stall......Page 163
8.5 Rotating Cavitation......Page 166
8.6 Surge......Page 168
8.7 Auto-Oscillation......Page 170
8.8 Rotor-Stator Interaction: Flow Patterns......Page 175
8.9 Rotor-Stator Interaction: Forces......Page 176
8.10 Developed Cavity Oscillation......Page 181
8.11 Acoustic Resonances......Page 183
8.12 Blade Flutter......Page 184
8.13 Pogo Instabilities......Page 186
9.1 Introduction......Page 189
9.2 Time Domain Methods......Page 190
9.3 Wave Propagation in Ducts......Page 191
9.4 Method of Characteristics......Page 194
9.5 Frequency Domain Methods......Page 196
9.6 Order of the System......Page 197
9.7 Transfer Matrices......Page 198
9.8 Distributed Systems......Page 200
9.10 Properties of Transfer Matrices......Page 201
9.11 Some Simple Transfer Matrices......Page 205
9.12 Fluctuation Energy Flux......Page 208
9.13 Non-Cavitating Pumps......Page 212
9.14 Cavitating Inducers......Page 215
9.15 System with Rigid Body Vibration......Page 224
10.1 Introduction......Page 226
10.2 Notation......Page 227
10.3 Hydrodynamic Bearings and Seals......Page 231
10.4 Bearings at Low Reynolds Numbers......Page 232
10.5 Annulus at High Reynolds Numbers......Page 237
10.6 Squeeze Film Dampers......Page 238
10.7 Turbulent Annular Seals......Page 239
10.8 Labyrinth Seals......Page 246
10.9 Blade Tip Rotordynamic Effects......Page 247
10.10 Steady Radial Forces......Page 249
10.12 Centrifugal Pumps......Page 258
10.13 Moments and Lines of Action......Page 263
10.14 Axial Flow Inducers......Page 266
Bibliography......Page 270
Index......Page 284